downtime once bubbled...
When I took my dm course I was told that I could wear whatever gear I wanted, but if I wanted to start helping with classes after I got my cert I'd have to wear gear the shop sold. Additionally, the shop's management equated bp/wings and long hose with dir. This setup was taboo. In order to help with the classes I would have to buy a new drysuit and a new bc. Because my instructor appreciated my help he would 'turn the other way' when it came to the gear I wore when helping classes, but would not allow a long hose. I was eventually told that I had 3-4 months to buy a new drysuit and bc or I would no longer be able to help with classes.
The solution? I went to another lds that I frequented and they basically told me "c'mon over, we'd love to have you, I don't care what gear you use as long as it's safe...". The owner's reasoning was that since he gives the dm's everything at 10-15% over cost, when they need new gear they're going to buy from him, if he were to force them to buy new gear, it would just cause friction and would detract from the most important thing...the students' training and safety.
The end result? I am working for a shop that I am happy with, who's owner I highly respect and will end up spending much more money there because I WANT TO rather than shop A where I would HAVE TO. One of the other dm's even had a slap strap with another lds' logo on it (he did eventaully remove that out of respect for the owner). The other shop is still churning out classes, but is constantly short staffed because their dm's are going elsewhere where they can help teach the sport they love without breaking their bank for the privilege. It's not unusual for some instructors at that shop to have 8-10 ow students with only the instructor and one dm. I find that disturbing, but with policies like that, they won't keep any dm on the staff for long.
To speak from my experiences helping classes (20-30 classes, not a lot, not a small number either)...I have never had a student say they were uncomfortable with the long hose setup. As a matter of fact, I've had several tell me that they like the idea of that configuration better. The ow students have the standard primary/octo setup. Likewise, I have helped classes with doubles and single tanks. All it took was a little explanation during the briefings to familiarize them with my setup. If the communication is there I do't see how students would be so uncomfortable with their staff using a long hose. That is no more foreign to them than any other piece of dive gear or any other configuration.
That's jsut my opinion and experiences,
dt